KCET · Physics · Semiconductors
In a \(p-n\) junction diode not connected to any circuit
- A the potential is the same everywhere
- B the p-type side has a higher potential than the n-type side
- C there is an electric field at the junction directed from the n-type side to p-type side
- D there is an electric field at the junction directed from the p-type side to n-type side
Answer & Solution
Correct Answer
(C) there is an electric field at the junction directed from the n-type side to p-type side
Step-by-step Solution
Detailed explanation
At junction a potential barrier/depletion layer is formed with \(n\)-side at higher potential and p-side at lower potential. Therefore, there is an electric field at the junction directed from the n-side to p-side.
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- A convex and a concave lens separated by distance are then put in contact. The focal length of the combinationKCET 2008 Medium
- A solenoid of inductance \( 2 \mathrm{H} \) carries a current of \( 1 \mathrm{~A} \). What is the magnetic energy stored in a solenoid?KCET 2014 Medium
- A radioactive nucleus has specific binding energy \(\mathrm{E}_{1}\). It emits an \(\alpha\)-particle. The resulting nucleus has specific binding energy \(\mathrm{E}_{2}\). ThenKCET 2012 Medium
- Which of the following spectral series of hydrogen atom is lying in visible range of
electromagnetic wave ?KCET 2014 Easy - Two sources are said to be coherent if they produce wavesKCET 2009 Easy
- Two point charges \( A=+3 \mathrm{nC} \) and \( B=+1 \mathrm{nC} \) are placed \( 5 \mathrm{~cm} \) apart in air. The work done to
move charge \( B \) towards \( A \) by \( 1 \mathrm{~cm} \) isKCET 2017 Easy
More PYQs from KCET
- The IUPAC name of
isKCET 2011 Easy - Identify the incorrect statement.KCET 2019 Hard
- If \( \tan x=\frac{3}{4}, \Pi < x < \frac{3 \Pi}{2} \), then the value of \( \cos \frac{x}{2} \) isKCET 2014 Medium
- The following is a scheme showing the electron transport system. Identify the electron carrier molecules indicated as A and B. Choose the correct option,
KCET 2010 Easy - Using MOT, compare \( \mathrm{O}_{2}^{+} \)and \( \mathrm{O}_{2}^{-} \)species and choose the incorrect option.KCET 2015 Easy
- A monochromatic beam of light is travelling from medium \(A\) of refractive index \(n_{1}\) to a medium \(\mathrm{B}\) of refractive index \(\mathrm{n}_{2}\). In the medium \(A\), there are \(x\) number of waves in certain distance. In the medium B, there are \(y\) number of waves in the same distance. Then, refractive index of medium \(A\) with respect to medium \(B\) isKCET 2012 Hard